Takai, Y., Nakatani, M., Aoki, T., Komori, D., Oyamada, K., Murata, K., … Kanehisa, H. Body shape indices are predictors for estimating fat-free mass in male athletes. PloS One, 13(1), e0189836. https://doi.org/10.1371/journal.pone.0189836 (Original work published 2018)